YDS port location

[ArimaGuy]

I have a 2004 F90TLRC and was looking for the YDS port, can't seem to locate it. Does that year have one?

[fairdeal]

A carbureted engine does not have a "YDS port",

YDS is found only with EFI - electronic fuel injection

[ArimaGuy]

As far as I can tell it is EFI.

2004 Yamaha F90TLRC

Type:	Outboard Motor
Year:	Current
Model:	F90 HP
Model Number:	F90TLR
Series:	Four Stroke Midrange
HP:	90
Engine Type:	4 Cylinder
Displacement:	97 ci (1596 cc)
Borex Stroke:	79 x 81.4 mm (3.11 x 3.20in)
Prop Shaft Horsepower:	90 @ 5500 RPM
Compression Ratio:	9.6
RPM Range:	5000-6000
Fuel Induction System:	EFI (DOHC)
Fuel Type:	Unleaded gasoline (minimum pump octane 87)
Exhaust:	Thru prop
Ignition System:	TCI Micro Computer
CARB Rating:	3-Star
Alternator Outputat WOT:	25A
Starting System:	Electric
Lubrication:	Wet Sump
Oil Capacity:	4.5 quarts
Recommended Engine Oil:	Yamalube 4M
Gear Ratio:	2.31
Control Type:	Remote
*****ing Throttle Adjustment:	+/- 50 RPM increments (600 - 1000 RPM range) via Command Link System
Cooling:	Water, Thermostatic Control
Weight:	369 lb (168 kg)
Gear Shift:	F-N-R
Command Link System:	Optional Equipment
Enhanced Ultimate Corrosion Protection System UCP:	Standard Feature
Power Trim and Tilt:	Yes
Shaft Length:	20 inch
Gearcase Rotation:	Right Hand (Standard)
Propeller:	Optional Equipment
Tiller Handle Kit:	Optional
	Yes

[boscoe99]

Your source of information is hosed. Re EFI and the ignition system type. Maybe other stuff.

[boscoe99]

If you were at the motor and looking for the YDS port, you must have overlooked the four carburetors.

[99yam40]

very strange that you noticed carbs on one of your other posts, but now think it is injected.

The 2004 F90TLRC motor is new to me. The motor looks real clean except this one part. I found the name and part # in the CARBURETOR 1 section of the parts look-up. It was the DIAPHRAGM ASSY 2 - 67F-14369-00-00. It looks a little rusted. Is that common and what is the function of this part....how would I know if it gets too rusted and starts to go bad? Thank you for any information on this.

[boscoe99]

This why I could never run for dog catcher. Someone would bring up my sordid past. Although sordid seems to be acceptable these days.

[99yam40]

This why I could never run for dog catcher. Someone would bring up my sordid past. Although sordid seems to be acceptable these days.

yes there are always someone that will dig back into the past just because they want to see what has happened back then.

[ArimaGuy]

I guess if I knew much about these motors I would not be asking the questions. I am really not trying to waste anyone's time. I winterized the motor like an EFI since I thought it was one by using the Yamaha fogging oil mixed in gas at the recommended ratio and ran the motor for 15 min. Will this have caused any problems?

[boscoe99]

We are just messing with you. Problem is we have too much idle time on our hands and waste it on our own.

No problems with what you have done.

[ArimaGuy]

Thank you.